Improvement in buck-saw frames



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JEROME C, DIETRIOBOF ROCHESTER, NEW YORK.

Letters Patent No. 113,639, dated April 11, 1871.

IMPROVEMENT IN BUCK-SAW FRAMES.

The Schedule referred to in these Letters Patent and making pax-l: of th same.

. I, JEROME O. DIETRroH, of Rochester, in `the county of Monroe and State of New York, have invented certain .Improvements in Buck-Saw Frames, of which the following is a specification.

My invention consists chiefly in. attachin g the straining-rod of a saw-frame to the extremity of the saw, and the use in connection therewith of a brace, which assists in straining the saw, and also stiifens the frame. i

In the drawingn Figure 1 is a side elevation of my invention.

Figure 2 is a sectional view of a modification of the saw attachment.

4The handbar A and stretcher B are similar to those of an ordinary saw-frame, and the saiv is" attached to Y the former by a pin or rivet in the usual manner.

The straining-rod O is secured to the extremity of the bar A, and is made of suiiicient length to bend .over the end of the stretcher and pass down through an eye or loop-strap, a, riveted or otherwise secured to the outer endl of the saw.

One extremity of adiagoual brace, b, is made fast to the stretcher B,and the other is connected to the straining-rod at or near its lower end.

f This latter attachment may be made by welding the two together, as indicated in Iig. 1, or the strainingrod may extend through an eye in the Aend of the brace, as shown Ain g. 2, an enlargement, d,-on the former retaining Ithe latter.

The loop-strap a embraces both these, and rests upon a lip, c, formed either upon the brace or straining-rod, thus constitutinga support for the end of the saw, and the opening in the strap a is such as toadmit the lip and rods b and c readily when the saw is being attached to the frame.

A straining-nut or swivel, D, is provided upon the rod C, constructed and operating. in the usual mauner.

It will be observed thatthe brace b is forced o'utward by the draft of the straining-rod, its upper end being the fulcrum about which it moves, such action of the ro'd and brace straining the saw to the requisite tension. l y

The brace also serves to st en the frame in the direction of the thrust of the operator,A while, bythe peculiar form and arrangement of the straining-rod the usual back-bar of the frame is dispensed with.

vThe straining-rod rests in a groove in the extrenlity of the stretcher B, and being quite small in diameter, the draft upon it, caused by the nut D, bends it about this point, in the act of straining the saw.

By my invention I obtain a strongsaw-frame, which is lighter and less bulky than the ordinary frame. while its cost is no greater.

I am aware of the patent granted to Augustus Pruyn, dated September l1, 1860, for buck-saw frame, and I do not claim any of the parts therein-'shown or described; but

What I claim as my invention isf- A buck-saw frame, composed ofthe handle A, continuous straining-rod G1), stretcherB, and brace 11,'

constructed, arranged, and operating substantially in the manner set forth.

rwitnesses: JEROME C. DIETRICH.

F. H. CLEMENT, GEO. T. PARKER. 

